The children are working with the Nesting Geometric Solids activities. These activities are the beginning of the Montessori puzzle sequence. A child begins with the Ovoid (egg) and Cup; they hold the cup in one hand while using the other to remove it. Next in the sequence is the Sphere (ball) and Cup. This requires a more refined grasp. The final material is the Cube and Box which adds the complexity of matching the corners. These simple activities encourage the use of both hands working together, and provide an opportunity to experiment with various grasps and aids in the development of eye-hand coordination.
